With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vctVcPeakOoSeqQueueSize
VC Tester Vc Peak Oo Seq Queue Size
1.3.6.1.4.1.562.2.4.1.5130.4.12.1.6
This attribute indicates the peak size of the out of sequence queue. This attribute is used as an indicator of the sequencing behavior across the subnet. It records the largest body of out of sequence packets.
Back to Nortel-Magellan-Passport-VcTesterMIB MIB page.
IPHost Network monitor allows you to monitor vctVcPeakOoSeqQueueSize on Allied Telesis device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Nortel multiplexers right now.